Three dimensional checkerboard



FIG. 1 is a perspective view of a three dimensional checkerboard showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a left side elevational view thereof; and,

FIG. 5 is a right side elevational view thereof. 

The ornamental design of a three dimensional checkerboard, as shown and described. 